Perhaps you should try some spelling variations:
thanh trung » thanh tung
chieu sach » chiet tach, chieu sang, chieu xanh
nhung cong » dung cong, thong cong, hang cong
hieu lang » chieu sang, hieu quang, nhieu tang
trung vap » trung cap, trung va, trung van
vap nhung » va nhung, ve nhung, voi nhung
cong tan » cong tac, cong san, cong thanh
tan chan » dan chan, ban chan, can chan
chan cau » phan cau, can cau, chinh cau

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: ho ((((chieu sach) or (chinh sach))) or (hieu lang)) - thanh trung vap nhung cong tan chan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((((chieu sach) OR (chinh sach))) OR (hieu lang)) - thanh trung vap nhung cong tan chan cau.
• Adding a wildcard symbol may retrieve word variants: ho ((((chieu sach) or (chinh sach))) or (hieu lang)) - thanh trung vap nhung cong tan chan cau*.